|Publication number||US20080211267 A1|
|Application number||US 12/004,104|
|Publication date||Sep 4, 2008|
|Filing date||Dec 19, 2007|
|Priority date||Dec 22, 2006|
|Also published as||DE102007061938A1, DE102007061938B4, US7552973|
|Publication number||004104, 12004104, US 2008/0211267 A1, US 2008/211267 A1, US 20080211267 A1, US 20080211267A1, US 2008211267 A1, US 2008211267A1, US-A1-20080211267, US-A1-2008211267, US2008/0211267A1, US2008/211267A1, US20080211267 A1, US20080211267A1, US2008211267 A1, US2008211267A1|
|Inventors||Matthieu Linardi, Fabrice Lesbats|
|Original Assignee||Matthieu Linardi, Fabrice Lesbats|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (2), Classifications (7), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention generally relates to a headrest for an automobile vehicle seat.
As an example, a comma-type headrest 20 which is formed of a body 22 comprising a rigid armature generally covered with lining and contained in a cover, body 22 being linked to seat back 14 by two pins 23. The position of body 22 with respect to seat back 14 can be modified by driving pins 23 more or less into seat back 14. As compared with a conventional seat back, body 22 has a reduced thickness and exhibits, in cross-section, the general shape of an upside down L. An advantage of such a headrest 20 is its low manufacturing cost and its low bulk.
It would generally be desirable, when a back seat is not occupied by a user, to be able to bring headrest 20 of this seat from a normal use position to a non-use position which improves the driver's visibility towards the back of the vehicle, or retrovision. The security constraints relative to automobile vehicle seats are determined by many standards. As an example, US standard FMVSS202a provides, in the case where the height of seat back 14 and of headrest 20 is smaller than 750 millimeters when headrest 20 is brought as close as possible to seat back 14, that headrest 20 must be able to be manually pivoted by plus or minus 60 degrees with respect to seat back 14 in a position where it is not used. In Europe, the current tendency tends to advocate that, when headrest 20 is in a non-use position, it must be a discomfort for a user who would attempt to sit in the seat.
It would also be desirable to be able to bring seat back 14 from a normal use position to a so-called “tilted” position in which seat back 14 is completely tilted against seat bottom 12, for example, so that the rear surface of seat back 14 forms a substantially planar surface. Headrest 20 must not obstruct the pivoting of seat back 14 on passing from the normal seat back use position to the tilted position, be headrest 20 in normal use position or in non-use position. In particular, headrest 20 must not knock, during the pivoting of seat back 14, against other vehicle elements such as, for example, the front seats. Further, at the end of the pivoting of seat back 14, the bulk of headrest 20 must be as small as possible in particular if headrest 20 comes into contact with seat bottom 12.
Document DE 10219453 describes a device for pivoting a comma-type headrest from a normal use position to a non-use position. However, the device described in this document does not enable bringing the headrest to a non-use position which improves the driver's visibility towards the back of the vehicle when the headrest is arranged at the level of a back seat.
The present invention aims at providing a headrest, for example, an automobile vehicle seat headrest likely to be brought to a non-use position, to improve the driver's backward visibility, when a user brings the headrest closer to the seat back.
According to an aspect, the headrest enables tilting of the seat back against the seat bottom when in non-use position.
According to another aspect, the headrest enables satisfying the previously described US standard FMVSS202a and European tendency.
According to another aspect, the headrest is of relatively simple design.
According to another aspect, the headrest may be provided with a reduced cost.
An exemplary embodiment of the present invention provides a headrest for a seat back of an automobile vehicle seat, comprising a rod, likely to be at least partly driven into the seat back, and a body linked to the rod. The rod comprises two pins linked to the seat back, each pin extending in a bent portion. The rod further comprises a U-shaped portion having its ends connected to the bent portions. A lower portion of the body is linked to the U-shaped portion by a pivoting link. The headrest comprises means, triggered by a driving of the rod into the seat back to a driving-in position, capable of automatically pivoting the body with respect to the rod from a use position to a non-use position.
According to an embodiment, the headrest comprises elastic return means linked to the body and capable of exerting an urge on the rod which tends to pivot the body with respect to the rod to bring the body to the non-use position from the use position.
According to an embodiment, the headrest comprises means for locking the body to the rod in the use position.
According to an embodiment, the headrest comprises a hook attached to the body, the locking means being assembled to be able to move with respect to the rod between a first position at which the hook cooperates with the locking means and a second position at which the hook is released from the locking means.
According to an embodiment, the headrest comprises urging means capable of permanently exerting an urge on the locking means which tends to displace it towards the first position and the locking means comprises a bearing surface likely to come into contact with the seat back when the rod is driven into the seat back down to said driving-in position, the seat back then exerting an urge on the locking means which tends to displace it to the second position.
According to an embodiment, the headrest comprises a shell covering the bent portions, the locking means being partly contained in the shell.
According to an embodiment, the body has, in side cross-section view, the shape of an upside down L, the rod being linked to the lower end of the body by the pivoting link.
According to an embodiment, the body has, in side cross-section view, the shape of a quadrilateral, the rod being linked to the base of the body by the pivoting link.
An embodiment of the present invention also provides an automobile vehicle seat comprising a headrest such as previously defined.
The foregoing and other aspects, features, and advantages of embodiments of the invention will be discussed in detail in the following non-limiting description of specific embodiments in connection with the accompanying drawings.
For clarity, the same elements have been designated with the same reference numerals in the different drawings. In the following description, terms “front” and “rear” are used with respect to the longitudinal direction of the vehicle. Further, terms “lower” or “bottom” and “upper” or “top” are used with respect to the direction perpendicular to the longitudinal and transverse vehicle directions which, as an example, corresponds to the vertical direction in the following description.
Headrest 20 comprises a shell 52 having a bulged wall 54 in the shape of a half-cylinder closed by a planar wall 56. Shell 52 is attached to insert 30 at the level of bent portions 36, 38, with bulged portion 54 covering bent portions 36, 38. Openings, not visible, are provided in shell 52 to enable passing of insert 30. Bulged wall 54 comprises an opening 58 oriented towards the front of the vehicle and planar wall 56 comprises a circular opening 60 (visible in
Headrest 20 comprises a hook 72, visible in
When a user wants to bring the headrest from the normal use position, shown in
To bring headrest 20 from the non-use position of the normal use position, the user extracts pins 32, 34 from seat back 14, possibly by an unlocking of blocking elements 48, 50 until push-button 62 is no longer in contact with seat back 14. Push-button 62 is then maintained against opening 60 of planar portion 56 under the action of spring 64. The user can then manually pivot rigid body 22 towards the back of the vehicle, that is, clockwise in
According to a variation, the driving of pins 32, 34 into seat back 14 may be performed by actuators, for example, electric motors. In this case, the user may actuate a control which causes the driving of pins 32, 34 into seat back 14 to bring headrest 20 to a non-use position.
When a user wants to bring seat back 14 from the normal use position to the tilted position, he can first bring headrest 20 to the non-use position shown in
According to a variation, the control used to enable pivoting of seat back 14 with respect to seat bottom 12 also unlocks blocking elements 48, 50 to enable driving of pins 32, 34 into seat back 14. According to another variation, the driving of pins 32, 34 into seat back 14 and the pivoting of seat back 14 may be performed by actuators, for example, electric motors. In this case, the user can actuate a control which causes the pivoting of seat back 14, and which causes, before the pivoting or during the pivoting of seat back 14, the driving of pins 32, 34 into seat back 14 to bring headrest 20 to a non-use position.
The embodiments of the invention have many advantages.
First, when a user brings headrest 20 as close as possible to seat back 14, headrest 20 is automatically displaced to the non-use position.
Second, in non-use position, rigid body 22 of headrest 20 is inclined towards the front of the vehicle. This enables satisfying US standard FMVSS202a and the European tendency.
Third, when headrest 20 is in the non-use position and a user tilts seat back 14 against seat bottom 12, rigid body 22 of headrest 20 is automatically displaced towards the low bulk position to avoid obstructing the bringing of seat back 14 against seat bottom 12.
Of course, the present invention is likely to have various alterations, modifications, and improvements which will readily occur to those skilled in the art. In particular, although a use of the headrest for a vehicle back seat has been previously described, it should be clear that the disclosed headrest may be used with a vehicle front seat, the non-use position then enabling improving the forward vision of a back passenger. Further, although in the previously-described embodiment, insert 30 is linked to seat back 14 by two pins 32, 34, but it should be clear that the structure of insert 30 may be different. In particular, insert 30 may be linked to seat back 14 by a single rod, of circular, rectangular, etc. cross-section.
Such alterations, modifications, and improvements are intended to be part of this disclosure, and are intended to be within the spirit and the scope of the present invention. Accordingly, the foregoing description is by way of example only and is not intended to be limiting. The present invention is limited only as defined in the following claims and the equivalents thereto.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8128162||Mar 24, 2010||Mar 6, 2012||Ford Global Technologies, Llc||Armrest assembly for a seat|
|US20130093218 *||Apr 18, 2013||Lear Corporation||Seat Assembly Having a Folding Seat Bottom and Head Restraint|
|Cooperative Classification||B60N2002/4891, B60N2/4873, B60N2/4858|
|European Classification||B60N2/48D2, B60N2/48C3D2|
|Apr 10, 2008||AS||Assignment|
Owner name: FAURECIA SIEGES D AUTOMOBILE, FRANCE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LINARDI, MATTHIEU;LESBATS, FABRICE;REEL/FRAME:020784/0800
Effective date: 20080321
|Aug 25, 2009||CC||Certificate of correction|
|Nov 26, 2012||FPAY||Fee payment|
Year of fee payment: 4